1445164140 has 48 divisors (see below), whose sum is σ = 4624526592. Its totient is φ = 330323136.

The previous prime is 1445164087. The next prime is 1445164141. The reversal of 1445164140 is 414615441.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1445164098 and 1445164107.

It is not an unprimeable number, because it can be changed into a prime (1445164141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720014 + ... + 1720853.

It is an arithmetic number, because the mean of its divisors is an integer number (96344304).

Almost surely, 2^1445164140 is an apocalyptic number.

1445164140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445164140 is an abundant number, since it is smaller than the sum of its proper divisors (3179362452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1445164140 is a wasteful number, since it uses less digits than its factorization.

1445164140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440886 (or 3440884 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1445164140 is about 38015.3145455881. The cubic root of 1445164140 is about 1130.5915246892.

Adding to 1445164140 its reverse (414615441), we get a palindrome (1859779581).

The spelling of 1445164140 in words is "one billion, four hundred forty-five million, one hundred sixty-four thousand, one hundred forty".